‘‘We know that the grain harvest season is a busy time of year on our roads, with farmers and heavy vehicle operators transporting big loads across the state and we’re here to support them,’’ Mr Henderson said.

‘‘Safety is our number one priority, which is why the scheme is available to operators with newer and safer vehicles made on or after January 1, 2002.’’

Mr Henderson said older vehicles could continue to operate as they had done so in previous years.

Following on from the success of last year’s scheme, the season will be extended from October 1 through to May30 next year to reflect industry feedback.